Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/99032
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dc.contributor.authorChen, Yi-Chunzh_TW
dc.contributor.author陳奕君zh_TW
dc.contributor.authorTai, Weizh_TW
dc.date2018-10-05-
dc.date.accessioned2019-09-11T01:36:59Z-
dc.date.available2019-09-11T01:36:59Z-
dc.identifier.urihttp://hdl.handle.net/11455/99032-
dc.description.abstractPolyurethane (PU) foam adhesives were prepared from castor oil as a polyol with isocyanate poly(4,4'-methylene diphenyl isocyanate) (PMDI) using a solvent-free process. The NCO/OH molar ratio used for the preparation of PU foams was 1.5. Water, organosiloxane and dibutyltin dilaurate were used as the blowing agent, surfactant and catalyst, respectively. The ratio of blowing agent and catalyst were adjusted to optimize the properties. The results show that PU foam prepared with 4 wt % of castor oil catalyst and blowing agent has minimal water absorption and maximal volume expansion in the PU foams. FT-IR analysis shows that a urethane bond was formed by the hydroxyl group of castor oil and the ⁻NCO group of isocyanate PMDI. More blowing agent and catalyst could improve the volume expansion ratio and reduce water retention of PU foams. It was found that Moso bamboo charcoal (Phyllostachys pubescens) and China fir wood particle (Cunninghamia lanceolate) composites with setting densities of 500 and 600 kg/m³ can be prepared from optimized castor oil-based PU foam adhesive at 100 °C for 5 min under a pressure of 1.5 MPa. Increasing the amount of bamboo charcoal decreases the equilibrium moisture content, water absorption and internal bonding strength of the composite. Notably, bamboo charcoal composite exhibits excellent dimensional stability. The optimized density and bamboo charcoal percentages of the composite were 500 kg/m³ and 50⁻100%, respectively. The castor oil-based PU composites containing bamboo charcoal fulfilled the CNS 2215 standards for particleboard. This dimensionally stable, low-density bamboo charcoal composite has high potential to replace current indoor building materials.zh_TW
dc.language.isoenzh_TW
dc.relationPolymers, Volume 10, Issue 10zh_TW
dc.relation.urihttps://www.ncbi.nlm.nih.gov/pubmed/30961025zh_TW
dc.subjectadhesivezh_TW
dc.subjectbamboo charcoalzh_TW
dc.subjectcastor oilzh_TW
dc.subjectcompositeszh_TW
dc.subjectpolyurethanezh_TW
dc.titleCastor Oil-Based Polyurethane Resin for Low-Density Composites with Bamboo Charcoalzh_TW
dc.typeJournal Articlezh_TW
dc.identifier.doi10.3390/polym10101100zh_TW
dc.awards2018zh_TW
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeJournal Article-
item.cerifentitytypePublications-
item.fulltextwith fulltext-
item.languageiso639-1en-
item.grantfulltextrestricted-
Appears in Collections:森林學系
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